Improvement in stirring apparatus for malt-kilns



A. VON SCHLEMMERQ I s'wmmm APPARATUS FORIMALT-IKILNS. V No.170,134.. PatenleNov.16,1 875.

UN T

PATENT; omen;

"AUGUST von soH EM- E or HOOHHEIM-QNTTHE-MAIN, GERMANY.

qf'IMPRovEMEN m s'rmRmc APPARATUS FOR IIVIALT-KILNS.

' Specification forming part of Letters'Patent No. 170,134, dated November 16, 1875; application filed 5 September 16, 1875. i

To all whom itmay concern:

.Be it known that L'AUGUST VON SGHLEM- MER, of Hochheim-on-the-Main, Germany, have invented an Improved Stirring Apparatus for Malt-Kilns; and I do hereby declare that the following isa full, clear, and exact description of the same, reference being had to the accompanying drawing making part of this specification.

My invention relates to certain improvements in stirring apparatus,applicable to either single or double kilns; and it consists in a novel construction and arrangement of the :various parts, whereby-their successful operationis insured. i

'In the accompanying drawing, Figure lis a horizontal sectional view of'a malt-kiln provided with my improvements. Fig. 2is a ver- 7 tical sectionalview taken in the line as m of Fig. 1. Fig. 3 is a vertical sectional view taken in the line y 3 .of'Fig. 1. r

The kiln isv here. represented as of the construction known as a double kiln, being divided into two compartments, A! A one above the other, with the floors a a ofthe construction usual in malt-kilns. The stirring appa-'- ratus in the upper compartment isdifferent from that in the lower one. The mechanism for. operating the stirrers is also shown as of a different construction in the two compartments; but either .of the forms ofsuch mechon theshaft to whichthey are attached. The lower compartment A is intended for dry malt, and the stirrers consist of split .quills q bolted,clamped, or otherwise attached to radial arms 1" on the stirrer-shaft.

Heretofore, in some cases, it h'asbeen customary to use bristles in the stirring'apparatus for dry malt; but it has been found in practice that they are not able to stand the heat of the kiln (ranging from about 144 to 180 Fahrenheit) for any great length of time, and consequently they soon become worn out and worthless. I have, therefore, adopted than bristles. p

- In each compartment of the kiln, 011 two opposite sides, a short distance above the floors, :are raoks'B B with the teeth of which en gage pinions 0 0 attached to shafts O (l near their ends; To these shafts are attached the stirrers, before described. Either or [both of these shafts may be driven by either of the two forms of driving mechanism shown herein. I will, however, describe said mechanism as here represented, commencing with the lower compartment. On the shaft 0 outside of the rack B and pinions c, is a bevel-gearwheel, D attached to said shaft, soas to turn there'- with. -A horizontal shaft, E is journaled in the frame-work of the kiln, at right angles with the'stirrer-shaft O and is'provided'with pulleys e c", for the reception of a belt for re tating it. On the horizontalshaft E are two bevel-wheels, G G, attached loosely to said shaft so as to slide-longitudinallythereon, and

allow said shaft to turn without imparting motion to them. These bevel-wheels gear with the wheel D On'the shaft E between the bevel-wheels G G is a double-acting clutch,

G", attached to said shaft by-a feather, so as I to turn therewith, but slide longitudinally V thereon. About midway of the length of theclutch is a ring or collar, g, working loosely between shoulders on the clutch, so as to ena-' ble it to give longitudinal motion thereto, and at the same time allow the clutch to rotate. From one side of the ring or collar y projects a, pin or stud, which engages with a curved slot, 2', in the lower or short arm of a lever,-I,- which is pivotedin a frame-or plate, H, and

carries a weight, j, at its upper end.

In the frame or plate H are the bearings for the shafts U and E. To the two opposite walls of the kiln, in line with the shafts E, are attached two bars, Z P, projecting inward toward the center. On these bars are two arms, L L which may be provided with setscrews, or other suitable means, for adjusting them on the bars at a greater or less distance from the walls of the kiln.

l When the lever I is inclined in one direction the double-acting clutch G is thrown into gear with one of the bevel-wheels, by

lever I is inclined in the other direction, the

clutch engages with the other bevel-wheel. By this means the shaftlfl is allowed torevolve continuously in the same direction without the necessity for reversing it in order to change the-direction of travel of the stirring apparatus. i Y

When the 1ever I is inclined in the direction shownin Fig. 1, the clutch G" is engaged with the bevel-wheel G which in turn is in gear with the bevel-wheel D, by which means the wheel D is rotated in the direction indicated by the arrow, so as to rotate the stirrershaft- 0 in a corresponding direction, while the engagement of the pinionc with the rack B causes said shaft to travel toward the righthand wall of thekiln. As the stirring apparatrl'sfreachesj the desired distance fromthe wall,'the1'inclined lever I comes in contact with the arm L which raises the lever to an upright position, and then inclines it to the reverse position, so asto disengage the clutch from the Wheel G}, and throw it into engage-J ment withjthe' wheel G by which means the motion of the wheel D and the travel of the stirring apparatus "are reversed, and continues until the lever I isfagain arrested and reversed by thearm L r a By this construction and arrangement of part-s'tllede'sired rotary and to-and-fro motions'of the stirring 'apparatusare communicated in a simple and effectual manner. I

The'driving mechanism, represented as applied to the stirring apparatus in the upper compartment is arranged as follows-.7 The stirren'shaft O? is provided with a pinion, c gearingiwith therack'B andwith a gear-wheel, D ,1outside of said rack. The shaft G has one Of'itS' bearings in a frame or plate, H which also furnishes bearings'for a shaft, E similar to the 'shaftEl, before described, and provided with'pull'eys e 6" 2 for the reception of a cross-belt, f and an open belt, f The shaft 'E? carries a worm, J ,which gears with the wheel D and imparts a rotary motion thereto.

I am aware thata stirring apparatus for malt-kilns has been provided with a worm engaging with a gear-wheel, for imparting rotary motion to the stirrer-shaft; but the teeth of the gear-wheel were arranged on its face, and'the worm-shaft was arranged on a lower plane than that of the stirrer-shaft, in consequence of which the diameter of the gearwheel was necessarily limited, and its power reduced;

In my-i'nvention the teeth are formed on the side of the wheel D and the worm-shaft is arranged on a higher level than that of the stirrer-shaft, so that, the worm will engage with the upper portion of the wheel.

, By this arrangement I am enabled to increase the diameter of the gear-wheel, and thereby obtain a greater leverage, so, as to increase the driving power, whioh is of great advantage in a working machine.

I In the two opposite walls of the kiln a sliding rod, K. is arranged, parallel with the shaft E. On this rod are two adjustable arms, M M similar to the arms L L, before described. The outer end of the sliding rod K is attached to the inner end of another sliding rod, K which carries forks k, for shifting the belts.

A lever, I", has its lower end pivoted to a fixed point, and carriesa weight, j", at its up perend, and about midway between its ends it engages with a slot in the sliding rod K As the shaft E revolves in one directionthe wheel D? is rotated in the direction indicated 7 by the arrow, until theframe' or plate H strikes the arm M by which means the slid- 1 ing rods K K are moved longitudinally toward the right-hand side of the kiln, so asto" throw. the cross belt f from the fast pulleye to the loose pulley c and the open belt f from the loose pulley e to the fast pulley e and thereby reverse the motion of the shaft E and consequently of the stirring apparatus,

which reversed motion continues until again arrested and reversed by the contact of the 7 frame or plate H with the arm M In order to provide for the thorough stir-j ring and turning of the malt, the ends of the kilns are provided with inclined or curved concave plates P at thepoints where the ends of the floors join the vertical walls. These plates may be curved to describe an arc of a circle corresponding with that described by the revolution of the stirring apparatus around j its shaft, by which means no corners will be left for the malt to lie in, so as to be free from contact with the. stirrers. I j I What I claim as new, and desire to secure by Lettrs Patent, is-

L'The combination, with the stirrer-shaft C and its gear-wheel D of the bevel-wheels Gr G thedouble-acting clutch Gr ,-i7]l6 driving-shaft E the pivoted weighted lever Land the arms L L arranged and operating as herein shown and described.

= '2. The stirrers,'composed of split quills q,as 

